Are you lotus owners satisfied with the high end speed of your cars? I am talking, 40-100 mph. I feel that this is one of the weaker points of the Lotus. Also, when answering, please state whether you have a base Elise, SC, or Exige. Thanks!
...up to one hundred a naturally-aspirated elise is plenty quick, and from one hundred to one-twenty we can still run with the large-displacement touring cars, although we begin to lag just a touch...really it's over one twenty, and particularly one-thirty onward, that our cars are out of their element amongst contemporary high-power cars, and we really stretch to make those last twenty miles per hour before gearing out at one fifty-five...
...i definitely feel things slowing down from 120-130, but it's not until pushing beyond 130-135 that she gets into 'i think i can, i think i can' territory - in my experience, that's where she's conspicuously incapable of running with the bigger guns...That's a bit generous. At about 120, you're really hitting the wall. 130 will take a long time from there compared to, say, a Cayman S.
Dave where did you get the values for frontal area and Cd?Well of course the base NA Elise falls flat on it's face from 120mph+... the majority of the engine's horsepower is being used to push it's bigass drag footprint through the air...
0.42 drag coef x 16.5 sf frontal area...
Stock Elise = 167.7 whp
60mph: 167.7 total - 13.5 drag = 154.2 whp left to accelerate
80mph: 167.7 - 28.5 = 139.2
100mph: 167.7 - 52.6 = 115.1
120mph: 167.7 - 88.0 = 79.7 (less 1/2 of available power)
130mph: 167.7 - 110.0 = 57.7
140mph: 167.7 - 137.2 = 30.5
150mph: 167.7 - 167.7 = 0 (top speed)
Now for giggles let's see my TVS equipped 286.4whp beasty...
60mph: 286.4 total - 13.5 drag = 272.9 whp left to accelerate
80mph: 286.4 - 28.5 = 257.9
100mph: 286.4 - 52.6 = 233.8
120mph: 286.4 - 88.0 = 198.4
130mph: 286.4 - 110.0 = 176.4 (about as much as stock)
140mph: 286.4 - 137.2 = 149.2
150mph: 286.4 - 167.7 = 118.7
160mph: 286.4 - 202.4 = 84.0
170mph: 286.4 - 241.8 = 44.6
180mph: 286.4 - 286.1 = 0.3 (give or take top speed)
Of course gearing and power/torque peaks come into effect but it's a ballpark...
Basically power to weight makes you move... low aero drag / high horsepower makes you accelerate at higher mph...